74405841
Jun 22, 1993
electro-precipitators for use in gas cleaning, units for collecting dust from industrial process gas streams and from industrial gas for air cleaning operations; gas cleaning devices for use in treating industrial gases; incinerators, industrial filtering or purification units for cleaning water or effluents; evaporative cooling towers; air filtering units for industrial installation, and plumbing fittings, namely valves, traps, cocks and bibbs, but not including ignition devices or ignition apparatus
Environmental Control Apparatus